268447689 has 32 divisors (see below), whose sum is σ = 406116480. Its totient is φ = 177409440.

The previous prime is 268447687. The next prime is 268447717. The reversal of 268447689 is 986744862.

It is not a de Polignac number, because 268447689 - 2¹ = 268447687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268447687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286029 + ... + 286965.

It is an arithmetic number, because the mean of its divisors is an integer number (12691140).

Almost surely, 2^268447689 is an apocalyptic number.

It is an amenable number.

268447689 is a deficient number, since it is larger than the sum of its proper divisors (137668791).

268447689 is an frugal number, since it uses more digits than its factorization.

268447689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1071 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 268447689 is about 16384.3733172801. The cubic root of 268447689 is about 645.0893764735.

The spelling of 268447689 in words is "two hundred sixty-eight million, four hundred forty-seven thousand, six hundred eighty-nine".